'ironwood tree' definitions:

Handsome East Indian evergreen tree often planted as an ornamental for its fragrant white flowers that yield a perfume; source of very heavy hardwood used for railroad ties [syn: rose chestnut, ironwood, ironwood tree, Mesua ferrea]

A small slow-growing deciduous tree of northern Iran having a low domed shape [syn: iron tree, iron-tree, ironwood, ironwood tree]

Medium-sized hop hornbeam of eastern North America [syn: Eastern hop hornbeam, ironwood, ironwood tree, Ostrya virginiana]